Friction

Front

What is friction?

Back

Friction is a force that opposes the motion of an object when it comes into contact with another surface.

Front

What are the two main types of friction?

Back

The two main types of friction are static friction (which prevents motion) and kinetic friction (which occurs when objects are sliding past each other).

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest and prevents it from starting to move.

Front

What is kinetic friction?

Back

Kinetic friction is the force that opposes the motion of two surfaces sliding against each other.

Front

What is sliding friction?

Back

Sliding friction is a type of kinetic friction that occurs when two surfaces slide against each other.

Front

What is rolling friction?

Back

Rolling friction is the force that opposes the motion of a rolling object, like a wheel or ball.

Front

What is fluid friction?

Back

Fluid friction is the resistance encountered by an object moving through a fluid (liquid or gas).

Front

How does gravity affect friction?

Back

Gravity pulls objects down, increasing the normal force, which can increase the amount of friction between surfaces.

Front

What happens to a box pushed on ice with no friction?

Back

The box will keep moving indefinitely as long as it doesn't hit anything.

Front

What happens to a box pushed on rough wood with a lot of friction?

Back

The box will stop very quickly due to the high friction between the box and the wood.